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As the consumption of energy increase in today’s world, the need for new fuel sources is of central importance. In order to be considered viable in the long run, the new energy sources must provide high efficiency and low environmental impact. The search for alternative fuels and energy extraction methods have become increasingly focused on finding ways to mimic systems found within nature. Oxidor
Med ökad andel intermittent elproduktion i Sveriges elproduktionsmix och ett åldrande stamnät ökar behovet av flexibilitet i elsystemet. Lagring av energi, till exempel i vätgas, är ett exempel på en sådan flexibilitetslösning, eftersom energin kan flyttas från tidpunkter med överskott till tidpunkter med högt energibehov. Syftet med examensarbetet är att undersöka energisystemnyttan med ett v ägaSweden’s increasing share of intermittent electricity production and aging backbone network has given rise to a need for flexibility in the energy system. A potential solution to this challenge is energy storage, where hydrogen is a possible pathway. This master’s thesis aims to investigate the energy system benefits of a hydrogen system for seasonal energy storage of excess solar electricity in a
People’s ability to learn holds a promise for sustainability as learning is seen to enable change; yet, the prevalence of norms and values in society that reinforce unsustainability may severely challenge this process. The debate on what role learning can play is centered around the question whether people can learn from others and if so, how to enhance it. More precisely, who has to learn what fr
“There is no tool for development more effective than the empowerment of women,” Kofi Annan (UN News Center, 2005). The empowerment of women takes different forms such as pursuit of education, participation in political activities and representation in leadership, equal employment opportunities and wages, access to health care and ability to make decisions on personal reproductive health, economic
Sex chromosome evolution is a fascinating research topic because sex chromosomes provide a snapshot of evolution in many different lineages. Sex chromosomes often cease to recombine and therefore degenerate, and have also often been reshuffled during their evolution from autosomes. It has been discovered that within Sylvioidea passerine species half of chromosome 4a has translocated and fused with
Remote sensed vegetation biophysical indicators are derived from various sensors and methods and contribute to the quantification of vegetation growth. They are used as inputs to early warning systems for crop yield estimation, thus improving crop management and food security. However, the performance of any such system is affected by the performance of the chosen remote sensed biophysical indicat
Denna uppsats undersöker NJA 2023 s. 393 (”Vapenattrappen”), och dess konsekvenser för såväl gällande rätt som domstolarnas rättstillämpning. Domen kom under våren 2023 att kritiseras hårt. I målet stod två män åtalade för försök till vapenbrott, eftersom de påstods ha försökt inneha vapen. Vapnen byttes emellertid ut mot en ofarlig attrapp av polis ca. fyra månader innan de tilltalade dök upp, vaThis paper examines NJA 2023 s. 393 ("The Dummy Weapon"), and its consequences for both current law and practical legal application. The verdict would come to be heavily criticized during the spring of 2023. Two men were prosecuted in the case. They were charged with attempted exceptionally aggravated weapons offence, since they had allegedly tried to possess firearms. The firearms had,
Herpes Simplex Virus type 1 (HSV-1) is a virus infecting over 90 % of the population. It causes latent infections in nerve cells and can upon reactivation travel along the neurons and cause lytic infections with painful blisters as a result. HSV-1 infects multiple cell types, fibroblasts and T-cells among others. During infection HSV-1 is known to downregulate the transcription of many of the gene
The use of topographical data in hydrological and agricultural applications has increased with GPS data availability and the concept of precision agriculture. This thesis investigates the relationships between topography and in one case simulated soil moisture and in the other case yield. The yield was recorded with a new optical sensor, which uses a digital camera to detect objects and records th
The book contains selected articles from research in different areas produced by scientists in Scandinavia. However, many of the articles are based upon professor Göran Fagerlund's original ideas. Titles:
1.Cementitious injection grouts - penetration ability (Alemo, J. & Hansson, P.).
2.A disadvantage of high performance concrete and a simple way to avoid it (Alexanderson, J).
The objectives of this thesis are to find a common ground for business and environmental interests and to evaluate the potential of Environmental Management Systems (EMSs) as transition tools to lead towards a greener economic paradigm. For these purposes it was assessed, which implications EMSs have for the competitiveness of small and medium sized enterprises (SMEs) within the first three years
Populärvetenskaplig sammanfattning Vi lever idag i ett informationssamhälle och delar av denna information är geografisk. Denna geografiska information kan användas för att skapa kartor efter egna önskemål och för specifika användningsområden. Genom att ansluta till en webbsida som tillhandahåller visningstjänster av kartor kan en användare välja vilken information som ska vara med i en karta och We live in an information intensive society and geographic data are part of this information. These geographic data are used by private persons to plan holiday trips or to find the way to business meetings. Companies utilize geographic data in fields such as forestry, construction work, and tourism. Local municipalities require geographic data for planning purposes, and in the academic world much
Vegetation on land is globally taking up about 30% of the CO2 that is emitted by human activities (oceans take up 30%, while 40% remains in the atmosphere). This ability to store carbon in the vegetation and in the soil is very important to mitigate the climate changes, but all land based ecosystems are not carbon sinks. Ecosystems that are losing carbon needs to be further investigated, so we can
Tetra Pak is continuously working to increase the efficiency of the whole organisation. There is currently a general demand to improve by 20%. The number is not to be taken literately since efficiency is not defined nor is it specified how it should be measured. At Tetra Top the interpretation is that it is important to focus on efficiency and that it is up to individuals how and when it can be at
Studies of tree species effects on soils have revealed a significant impact on soil organic carbon (SOC) stocks and the carbon (C) distribution between forest floor and mineral soil, but the underlying mechanisms including the roles of litter traits, soil properties, and microbiome remain unclear. To address this challenge, we tested the effect of six common European tree species on the quality an
Background: SARS-CoV-2, the causal agent of COVID-19, enters human cells using the ACE2 (angiotensin-converting enzyme 2) protein as a receptor. ACE2 is thus key to the infection and treatment of the coronavirus. ACE2 is highly expressed in the heart and respiratory and gastrointestinal tracts, playing important regulatory roles in the cardiovascular and other biological systems. However, the gene
It is often a challenge for a child to communicate their pain, and their possibilities to do so should be strengthened in healthcare settings. Digital self-assessment provides a potential solution for person-centered care in pain management and promotes child participation when a child is ill. A child's perception of pain assessment differs when it is assessed using digital or analog formats. As w
